WO2019145362A1 - Emballage - Google Patents

Emballage Download PDF

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Publication number
WO2019145362A1
WO2019145362A1 PCT/EP2019/051635 EP2019051635W WO2019145362A1 WO 2019145362 A1 WO2019145362 A1 WO 2019145362A1 EP 2019051635 W EP2019051635 W EP 2019051635W WO 2019145362 A1 WO2019145362 A1 WO 2019145362A1
Authority
WO
WIPO (PCT)
Prior art keywords
packaging
layer
product container
packaging layer
translucent
Prior art date
Application number
PCT/EP2019/051635
Other languages
German (de)
English (en)
Inventor
Andreas Michalsky
Christian Fenn-Barrabaß
Siegfried Kronschnabl
Stefan Leicht
Original Assignee
Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg filed Critical Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg
Publication of WO2019145362A1 publication Critical patent/WO2019145362A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/38—Articles or materials enclosed in two or more wrappers disposed one inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another

Definitions

  • the invention relates to a packaging, in particular a flexible packaging, according to the preamble of claim 1.
  • Packaging of this type has been known for some time and is used for packaging various types of filling products which may be solid, liquid, pasty and / or powdery.
  • film or laminate materials are often used which serve to produce the entire package or at least part of the packaging.
  • flat pouches, tubular pouches, stand-up pouches and also can-shaped packagings may be mentioned at this point, which may be made partly or wholly from composite materials.
  • packages are usually provided for labeling the contents of the package as well as for marketing and promotional purposes with a printed image.
  • packages which are made of translucent laminates or in whose manufacture translucent, namely translucent laminates were used, there is the risk that the product will shine through the transparent laminate to the outside and thereby the color effect and appearance of the printed image in usually negatively changed, causing graying or blueing and especially visible as a darkening.
  • This effect occurs especially in the case of close contact of the respective contents with the inside of the translucent translucent laminate, in particular if the contents are liquids or moist contents.
  • an attempt was made to counteract this negative effect by increasing the white grammage in the respective printed image or by integrating additional white layers either in the laminate or in the printed image.
  • none of the said measures is actually suitable to protect the color design and appearance of a printed image, which is applied to a translucent packaging or a translucent packaging section, when a, in particular liquid or wet, filling material is applied to the inside of the translucent packaging or the translucent packaging section, said In particular bright areas of the printed image were darkened particularly disadvantageously.
  • the aforementioned measures, especially when using opaque materials, meant that windows could no longer be used in the respective packaging.
  • the invention has for its object to provide a cost-effective and easy-to-manufacture packaging, with which above-mentioned problems are avoided, and by means of which, regardless of the respective contents, a uniform homogeneous and visually appealing print image is maintained with colorfast colors and that even if, for example, liquid and / or wet filling materials come into contact with the packaging material.
  • a packaging in particular a flexible packaging, which is made of or with at least a first and a second film and / or laminate material and at least one translucent packaging region, wherein the first film and / or laminate material to at least in the translucent packaging region, an outer packaging layer and the second film and / or laminate material form an inner packaging layer at least in the translucent packaging region, wherein the outer packaging layer is movable in the translucent packaging region relative to the inner packaging layer.
  • An essential point of the invention lies in the fact that the translucent packaging or the translucent packaging region is formed from two packaging layers, namely from an outer packaging layer and an inner packaging layer, so that a filling material always lies against the inner packaging layer, respectively with it can come and thus always from the outer packaging layer, which has a printing and / or another optical design spaced is.
  • the outer packaging layer is arranged to be movable in the translucent packaging area relative to the inner packaging layer, that is, the inner packaging layer is not connected in a planar manner to the outer packaging layer.
  • the translucent area of the package according to the invention may extend either over substantially the entire package or only over individual packaging areas, such as one or more windows, the front and / or back of the package, or certain pattern-like arrangements on the package.
  • the inner packaging layer is designed to receive liquid, moist and / or pasty filling material and forms a first product container that is sealed to an outer side of the inner packaging layer.
  • the inner packaging layer is hermetically sealed and forms a container which essentially corresponds to the shape of the packaging according to the invention and, if appropriate, the shape of an outer product container.
  • the outer packaging layer is arranged outside the inner packaging layer in terms of packaging and is applied or attached to or on the first Gregutbe- container formed by the inner packaging layer, in particular glued to the inner packaging layer and / or sealed or substantially completely surrounds the first product container formed by the inner packaging layer and forms a second product container formed as an outer container.
  • the container according to the invention may be formed in that two substantially identical shape container, namely the first product container and the second product container are arranged quasi each other, wherein the first product container through the inner packaging layer and the second product container through the wherein the two Gregut capableer are selectively and / or linearly and / or interconnected by common welds, wherein such connection points are preferably attached to locations of the package according to the invention, which are either thick and thus opaque, or the dark, with very low translucency, ie opaque and / or formed with a corresponding dark and / or opaque printing or as a sealed seam.
  • the inner product container may also be shaped differently than the outer container, for example in the form of a simple flat or tubular bag, which is introduced into the outer container, which may be in the form of a stand-up pouch, for example.
  • the first product container is preferably arranged in the second product container and fastened therein, so that the first product container can only move slightly in the second product container, but is arranged essentially stationary in the outer container. is net. According to an alternative embodiment, however, the first product container may also be placed loosely in the second product container.
  • Such an embodiment of two quasi-nested containers is particularly advantageous when virtually the entire container is made of a translucent film and / or laminate material.
  • the packaging according to the invention may also have only partially translucent packaging areas.
  • an actual packaging body of the packaging according to the invention which substantially defines the shape of the packaging, to be formed only from the inner packaging layer or only from the outer packaging layer, both only in the translucent packaging region
  • Packaging layers are arranged opposite one another and in a substantially parallel orientation to each other and against each other movable.
  • the inner packaging layer may form the actual container body according to the invention and be printed with the exception of the translucent packaging region or the translucent packaging regions, while an outer packaging layer, which in turn is printed, is attached above the translucent packaging region (s) ,
  • the outer packaging layer is applied to the inner packaging layer in such a way that the outer packaging layer protrudes over the translucent packaging region and outside the translucent packaging region connects with the inner packaging layer and on the outside of the inner packaging layer, i. for example, glued or sealed, is.
  • the actual packaging body of the packaging according to the invention may also be formed by the outer packaging layer, wherein the outer packaging layer has one or more translucent packaging sections which are covered on the inside of the packaging with the inner packaging layer, wherein the inner packaging layer outside the respective translucent Packaging sections connected to the inside of the outer packaging layer, ie in turn, for example glued or sealed, is.
  • a second filling material receiving space is formed between the first product container and the second product container, which is provided according to the invention for receiving solid dry products.
  • the first product container and the second product container have at least one common adhesive and / or sealing seam connecting the first product container and the second product container, the first product container and / or the second product container advantageously being connected via a common opening mechanism, for example in FIG Form of an opening aid, such as a notch, and have an adjacent in the two Gregut electernaded- Deten in the same direction extending weakening or tear line, so that the first product container and / or the second product container can be opened simultaneously.
  • the inner product container may also be located loosely within the outer container without the inner product container being fixed in the outer container.
  • Such an inner product container arranged loosely in an outer container can furthermore be connected to it only at functional points or portions of the outer packaging, in particular the periphery of the outer packaging, for example in the region of an intended opening portion with a common tear notch in the connection area between inner product container and outer container ,
  • the first product container and / or the second product container has a barrier layer, for example of cycloolefin copolymer (COC) or other known barrier layer materials, such as one or more, in particular mixtures, the materials polyamide (PA), in particular aromatic and / or partially aromatic polyamide, or mixtures thereof, mixtures of polyamide (PA), in particular aromatic and / or partially aromatic polyamide, or of mixtures thereof with ethylene vinyl alcohol copolymer (EVOH) and / or polyacrylonitrile (PAN), polyethylene terephthalate (PET) and / or polyacrylonitrile (PAN), on, wherein the barrier layer is at least ementdampfunduchage and preferably gas-impermeable.
  • COC cycloolefin copolymer
  • other known barrier layer materials such as one or more, in particular mixtures, the materials polyamide (PA), in particular aromatic and / or partially aromatic polyamide, or mixtures thereof, mixtures of polyamide (PA), in particular aromatic and / or partially aromatic
  • the barrier layer may in this case according to the invention be arranged both in and / or on the packaging material of the inner product container and in and / or on the packaging material of the outer product container as well as in the materials of both product containers, wherein according to the invention a sole embodiment of the inner product container with a barrier layer is preferred is, because in this way the arranged in the inner product container barrier layer receives a guaranteed by the outer container additional protection against mechanical influences.
  • the outer packaging layer according to the invention has a printing on.
  • an inner side of the outer packaging layer has a rough surface structure in order in this way to prevent the outer side of the inner packaging layer from adhering to the inner side of the outer packaging layer.
  • the inner packaging layer and the outer packaging layer are formed of a common base film or laminate material, wherein the base film or laminate material has a reduced thickness at least in the translucent packaging region between the inner packaging layer and the outer packaging layer Composite adhesion and optionally has a release agent, so that the inner packaging layer in the course of production and / or treatment of the packaging of the outer packaging layer separates by mechanical and / or thermal treatment.
  • a thermal treatment can take place, for example, in the form of a sterilization of the package, in which the package is heated to a certain temperature at which the inner packaging layer separates from the outer packaging layer at the points at which the two packaging layers are not explicitly glued together or welded.
  • translucency in the context of this invention is used in contrast to the term “transparency” and refers to a partial transparency of the packaging according to the invention or a region of the packaging according to the invention, within the meaning of translucent, whose reciprocal, ie opposite property in the present sense of the term is called opacity.
  • transparency is used not for a partial transparency, but for a substantially complete light transmission with a maximum attenuation of the light intensity in the range up to 5%.
  • the term "moist” means a liquid content, in particular water content, in the range of 100% to 20%, preferably in the range of 100% to 35% and particularly preferably in the range of 100% to 50% and / or a water activity value ( aw value) of 0.5 ⁇ aW value ⁇ 1.0.
  • the inside of the packaging layer adjoining a filling material may be provided with an antifogging coating. This is expedient in particular for a water activity value of the filling material from 0.5, in order to avoid condensation of moisture at room temperature or in the case of temperature fluctuations in the head space of the packaging according to the invention.
  • Such an anti-fog coating can also be arranged on the inside of the outer packaging layer as desired. Such a measure reliably and effectively prevents moisture from condensing on the inside of the outer packaging layer, even if the inner packaging layer should be damaged in an undesired manner.
  • This inner layer can be applied in the packaging as an additional layer and in turn, in the form of an inner packaging, must be sealed so tightly inwards that the hermetic of the packaging according to the invention is not thereby impaired.
  • An inner foil loosely sealed in a packaging need not have an additional barrier, but it may have such and must be tightly sealed in the sealing seams, at least inwards.
  • the additional interior foil, i. inner packaging layer must therefore be compatible with the sealing properties of the outer layer and seal itself tight on the inside to ensure the tightness of the package by intact sealing seams sufficient.
  • the inner layer may alternately peel off from the inner layer of the outer packaging material in the manufacture of the packaging or the subsequent storage and / or sale to an end user so that the printed outer layer has no contact with the contents.
  • a spacer may also be arranged between the inner and the outer layer.
  • a gas-filled intermediate space the inner packaging layer in a useful and advantageous manner from the outer packaging layer separates.
  • Such a gas-filled intermediate space can additionally improve the barrier properties of the overall package according to the invention.
  • such a gas filling the interspace between the inner packaging layer and the outer packaging layer can either be introduced into the packaging according to the invention during the filling of the contents, but alternatively originate from the product which, for example, results in gas evolution, for example to a C0 2 development tends.
  • the gas forming in the inner packaging can then migrate, for example, through the inner packaging layer into the intermediate space between inner and outer packaging layer and be enclosed there by a barrier in the outer packaging layer.
  • the inner layer can also be formed as a shell around the product, so that liquid phases of the product no longer have any contact with the printed layer of the packaging laminate.
  • the essence of the invention is to prevent falsification of a printed image in or in a transparent or translucent laminate by a cancellation of a contact of the printed layer with the printed image.
  • all forms of packaging which can be formed from a laminate are considered as packaging forms, in particular lid films, bags, flat bags, stand-up pouches, tubular bags and the like laminate or film packaging.
  • the gap between additional inner layer and printed outer layer of the packaging material is according to the invention against the ingress of moisture, for example by a hermetic seal, protected to penetration of product and / or moisture from the inside or outside in the space between the inner packaging layer and outer packaging layer to avoid.
  • the additional inner layer can also have outward channels which extend, for example, through a common sealing area of the inner and outer packaging, so that the Contents containing packaging space with the environment is in a gas-exchangeable connection, while the gap between the inner packaging layer and the outer packaging layer with respect to the environment and against the packaging material containing the filling is tight.
  • Such an embodiment of the packaging according to the invention can be selected when the filling material is insensitive to a risk of moisture ingress, wherein Such an embodiment advantageously offers a possibility for an optical improvement of the packaging according to the invention by a separation of the possibly deformed inner layer from the undeformed outer layer.
  • an optical improvement of the optical form of the packaging according to the invention is possible in an advantageous manner, namely a smooth uniform outer shape, even if the shape of the inner packaging layer is irregularly and unsightly deformed optically ,
  • the loose arrangement of the inner packaging layer in the outer packaging layer also effects a mechanical protection, which can be increased in a targeted manner, for example, by an air cushion between the inner and the outer packaging layer.
  • the packaging body of the packaging according to the invention has special tear-open properties
  • this also applies to the additional inner layer, which in this case has corresponding tearing properties.
  • the inner layer can also be designed so that it offers little or no resistance to the tearing properties of the outer layer.
  • an initial adhesion of the inner layer to the outer layer can also be achieved by a selectively and / or partially applied release substance in the specifically detachable region, in which the inner layer separates from the outer layer.
  • a selectively and / or partially applied release substance in the specifically detachable region, in which the inner layer separates from the outer layer.
  • such an inventive desired detachment of the inner layer, ie the inner packaging layer, from the outer layer, ie the outer packaging layer also by the lack of a bonding agent in this translucent
  • the area of the subsequent packaging with a resulting low bond strength of the inner packaging layer to the outer packaging layer and thus increased probability of detachment of the inner packaging layer from the outer packaging layer with corresponding after-treatment, such as a sterilization treatment can be achieved.
  • a consistently good bond adhesion of the extrusion bonding medium to the printed outer layer can be produced in order to support it mechanically, wherein in the area of translucent sections the later packaging produced from the common base film or laminate material picks up a locally - Bene composite adhesion of the extrusion medium to the inner layer or vice versa, ie a partially canceled liability to the outer layer, is generated.
  • the additional inner layer can optionally be applied only to the front or back of a package or on all parts of a package.
  • the inner layer For applications involving heat treatment of the product in the packaging, such as sterilization, it may be advantageous to provide the inner layer with a special barrier against water vapor in order to prevent the penetration of water vapor through the inner layer into the intermediate space.
  • a barrier layer for example, polyolefin copolymer (COC) is preferred according to the invention.
  • COC polyolefin copolymer
  • a rough surface of the inner foil towards the intermediate space may be advantageous in order to avoid adhesion between inner foil and outer layer.
  • the additional inner layer can act as an additional separating layer and / or as a barrier between the printing inks and the laminating adhesives from the outer layer of the laminate or with respect to the surroundings. Additional materials may be packaged or shielded from the contents, such as scavengers, flavors, dry product components, utensils, such as spoons or product components that would be in contact with moisture over the shelf life, in the space between the additional inner layer and the printed outer layer.
  • improvements of the actual outer laminate can be achieved, such as improved sealing properties when using a sealable inner film.
  • the barrier, stiffness drop resistance properties can also be improved by the additional inner foil.
  • the printed outer layer can also be designed as a label which does not adhere in the optically critical regions.
  • the packaging according to the invention can also be produced from a separate inner container and outer container, wherein the inner bag is made of pure polyolefin and is sterilized separately and alone after filling and only then into the outer bag, the one, in particular full, barrier and imprinting).
  • the outer packaging container need not be sterilized and may be provided with a simple, possibly non-sterilization, barrier layer, for example of OPP-SiOx / AlOx.
  • barrier layer for example of OPP-SiOx / AlOx.
  • This can be a great cost saving and opens up the possibility of producing packaging with all functions, in particular pure mono-materials, such as pure polypropylene.
  • such separate inner bag according to the invention are also extremely advantageous for a separate recycling, as these separate inner bag from the outer bag are very easy separable.
  • the additional inner layer can also be a white or otherwise colored film, which according to the invention contributes to a further improvement of the opacity and to cost savings in the printing inks.
  • packaging according to the invention supports the increasing trend away from aluminum-containing laminates towards laminates with transparent barrier layers.
  • FIG. 1 is a schematic representation of an embodiment of the packaging according to the invention in sectional view
  • Fig. 2 is a schematic representation of another embodiment of the package according to the invention in sectional view.
  • Fig. 1 shows a schematic representation of an embodiment of the package 10 according to the invention in a sectional view.
  • the packaging 10 is formed from a first film and / or laminate material 20 and a second film and / or laminate material 30, the first film and / or laminate material 20 being an outer packaging layer and the second film and / or laminate material 30 forms an inner packaging layer.
  • the packaging 10 according to the invention is formed from the outer packaging layer 20 in the form of a flat or tubular bag packaging with a top seal seam 60 and a bottom seal seam 70, while the inner packaging layer 30 runs on the inside of the wall of the outer packaging layer 20 substantially parallel to the outer packaging layer 20 , but only in the top seal seam 60 and the bottom seal seam 70 is connected to the outer packaging layer 20.
  • the inner packaging layer 30 is arranged loosely.
  • the inner packaging layer 30 is itself designed as a product container, namely as an inner product container and contains liquid product 50, which rests against the inner wall of the product formed by the inner packaging layer 30 Golfgut publicationsers. A contact of the filling material 50 with the outer packaging layer 20 is excluded. Above the medium 50 is located in the of the inner packaging layer 30 formed Medgut employer a headspace, which is free of liquid contents. A color difference of a printing between the areas of the package according to the invention, which have liquid contents and which are free of liquid contents, according to the invention does not exist.
  • FIG. 2 shows a schematic representation of a further embodiment of the packaging 10 according to the invention in sectional view, in which a separate inner bag made of a second film and / or laminate material 30 is largely loosely packed in an outer bag made of a first film and / or film. or laminate material 20 is arranged.
  • the outer bag has, along its circumferential outer edge, a likewise circumferential sealing area 90, which connects a front side of the outer packaging 10 to a rear side of the outer packaging 10.
  • the arranged inside the outer bag of the inner bag of the package 10 according to the invention ent long along its upper and lateral right edge shown in Fig.
  • the connection is realized in that the inner bag and the outer bag a common seal area 95 have in wel chem the respective bags connected to each other and sealed from the environment.
  • an opening aid is arranged, which is designed as a tear-open notch 80.
  • This tear notch 80 is indicated schematically in Fig. 2. If the tear-open notch 80 is torn open, the common sealing area of the outer and inner bags is torn, with both the outer bag and the inner bag being opened in the event of a tear.
  • the inner bag made of the second film and / or laminate material is suitable for receiving a liquid or moist filling material, while the outer bag is suitable for receiving a dry, ie not moist, product.
  • the inner bag is loosely disposed inside the outer bag and movable with respect to the outer bag.
  • the outer bag can be designed and / or printed over its entire outer surface or only in partial areas of this surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un emballage (10), en particulier un emballage souple, qui est fabriqué à partir ou à l'aide d'au moins un premier (20) et un deuxième matériau (30) de type feuille et/ou stratifié et qui présente au moins une zone d'emballage translucide, le premier matériau (20) de type feuille et/ou stratifié formant une couche d'emballage externe au moins dans la zone d'emballage translucide et le deuxième matériau (30) de type feuille et/ou stratifié formant une couche d'emballage interne au moins dans la zone d'emballage translucide, la couche d'emballage externe étant mobile par rapport à la couche d'emballage interne dans la zone d'emballage translucide.
PCT/EP2019/051635 2018-01-24 2019-01-23 Emballage WO2019145362A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018101566.6 2018-01-24
DE102018101566.6A DE102018101566A1 (de) 2018-01-24 2018-01-24 Verpackung

Publications (1)

Publication Number Publication Date
WO2019145362A1 true WO2019145362A1 (fr) 2019-08-01

Family

ID=65228550

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/051635 WO2019145362A1 (fr) 2018-01-24 2019-01-23 Emballage

Country Status (2)

Country Link
DE (1) DE102018101566A1 (fr)
WO (1) WO2019145362A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021118731A1 (de) 2021-07-20 2023-01-26 Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg Kunststofflaminat mit Oxid-Barrierelage und Zonen unterschiedlicher Verbundhaftung sowie Verpackung aus diesem

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR1106180A (fr) * 1954-08-04 1955-12-13 Emballage pour produits liquides pâteux, pulvérulents ou autres
US3318759A (en) * 1965-12-07 1967-05-09 Riegel Paper Corp Duplex packaging material
EP0796802A2 (fr) * 1996-03-22 1997-09-24 Orihiro Engineering Co., Ltd. Film multiple pour sacs
WO2015195727A2 (fr) * 2014-06-20 2015-12-23 Arch Chemicals, Inc. Système d'emballage pour emballer et administrer des doses contrôlées d'agents chimiques

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Publication number Priority date Publication date Assignee Title
JPH0632351Y2 (ja) * 1986-04-07 1994-08-24 富士写真フイルム株式会社 包装材料
US5590777A (en) * 1993-03-01 1997-01-07 Ongard Systems, Inc. Sterilizable flexible pouch package
DE10223266C1 (de) * 2002-05-24 2003-11-20 Henkel Kgaa Verwendung Einspülkammer-dosierbare Tabletten-Portionen
DE202011106202U1 (de) * 2011-09-30 2012-01-12 Guk-Falzmaschinen Griesser & Kunzmann Gmbh & Co. Kg Transportgebinde für Falzprodukte und zugehörige Verpackungsanlage sowie Spenderanlage
DE102011085778A1 (de) * 2011-11-04 2013-05-08 Henkel Ag & Co. Kgaa Verpackungssystem mit Duftstoffzusammensetzungsträger
JP2016209797A (ja) * 2015-05-01 2016-12-15 富士フイルム株式会社 吸湿材料及びその製造方法、並びに包装材料

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1106180A (fr) * 1954-08-04 1955-12-13 Emballage pour produits liquides pâteux, pulvérulents ou autres
US3318759A (en) * 1965-12-07 1967-05-09 Riegel Paper Corp Duplex packaging material
EP0796802A2 (fr) * 1996-03-22 1997-09-24 Orihiro Engineering Co., Ltd. Film multiple pour sacs
WO2015195727A2 (fr) * 2014-06-20 2015-12-23 Arch Chemicals, Inc. Système d'emballage pour emballer et administrer des doses contrôlées d'agents chimiques

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